Shelf-life extension of crucian carp (Carassius auratus) using natural preservatives during chilled storage |
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| Authors: | Tingting Li Jianrong Li Wenzhong Hu Xuguang Zhang Xuepeng Li Jin Zhao |
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| Affiliation: | 1. College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310035, China;2. College of Life Science, Dalian Nationalities University, Dalian 116600, China;3. Bohai University, Jinzhou 121013, China;4. Zhejiang Marine Food Processing Quality Control Techniques and Instrumentation Engineering Laboratory, College of Life Science, China Jiliang University, Hangzhou 310018, China |
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| Abstract: | The effect of the natural preservatives, tea polyphenols and rosemary extract, on microbiological total viable count (TVC)], chemical pH, total volatile base nitrogen (TVB-N), K-value and thiobarbituric acid (TBA) values], texture and sensory changes of air-packaged whole crucian carp (Carassius auratus) stored at 4 ± 1 °C was investigated for 20 days. The shelf-life of crucian carp was found to be 7–8 days for untreated group (control), 13–14 days for tea polyphenols group and 15–16 days for rosemary extract treated group according to sensory assessment results, for which the corresponding microbiological assessment also showed an increased shelf-life. Meanwhile, the increases of pH, TVB-N, K-value and TBA values were significantly delayed in both treated groups of samples compared to the control group. Thus, either tea polyphenols or rosemary extract could be used as potential preservatives to extend the shelf-life of crucian carp during chilled storage. |
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| Keywords: | Crucian carp Tea polyphenols Rosemary extract Quality characteristics Shelf-life |
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